XTZ BERYLLIUM
CONVERSION
INCLUDING:
SEAS T29B001 1 pcs.
Crossover 1 pcs.
Congratulations on your beryllium kit purchase! You got a couple of
joyful hours ahead of you, The conversion demands patience and
sleight of hand, however in return you will get what we think is one
of the best possible Performance/Price speaker in the world, and
you have made it yourself!
1
Cabinet Optimization
Dismantling the speaker
Unscrew and remove the woofer, tweeter, speaker terminals.
Remove all the damping material and remove the old filter.
! Be Careful and keep everything nice and tidy, you will need
every part later. The picture below shows a dismantled 99.26
Page 1
Creating the dampening pads
Start with cutting strips of the damping material. We used
Mataki "Elastomer"(500 mm width)roll (You can use various range
of products like this). Size and number of strips are specified down
below (99.26-Matte black, -Matte white & -Walnut only). Each pad
should be at least 3 layers(~5mm) thick. Keep the protective paper
on the first layer. On the remaining layers remove the protective
paper and build up the pads, layer by layer.
(Bitumen pads used for car industry or alike will also work )
The pictures below is an example for 1pc.
XTZ 99.26-Matte black, -Matte White & -Walnut
2
The picture above shows the finished pieces.
Cut 4pcs. 85x500mm (if your roll is 500mm wide)
Cut and paste to get 2pcs. (3 layers thick) 85x290mm strips
Cut 4pcs. 60x500mm (if your roll is 500mm wide)
Cut and paste to get 2pcs. (3 layers thick) 60x290mm strips
Cut 4pcs. 60x500mm (if your roll is 500mm wide)
Cut and paste to get 1pc. (3 layers thick) 60x660mm strip
Leftover pieces (used later and attached to bass port and bracings)
A
B
C
D
Page 2
The picture above shows the finished pieces.
Cut 4pcs. 85x500mm (if your roll is 500mm wide)
Cut and paste to get 2pcs. (3 layers thick) 85x290mm strips
Cut 4pcs. 60x500mm (if your roll is 500mm wide)
Cut and paste to get 2pcs. (3 layers thick) 60x290mm strips
Cut 4pcs. 60x500mm (if your roll is 500mm wide)
Cut and paste to get 1pc. (3 layers thick) 60x660mm strip
Leftover pieces (used later and attached to bass port and bracings)
Installing the dampening pads
When you have ensured the fitting of the pads inside the cabinet,
next step is to install them. Remove the protective layer and start
with pressing them in place. Be careful to not smudge any of the
sticky pads onto the cabinet. The picture below shows how the
different pieces are placed inside the 99.26. The leftover pieces
are placed on the bass port and the bracings to further dampen
vibrations and oscillation.
3
Page 3
4
Installing The New Crossover
Crossover installation
Before you put back the old damping material, next step is to
install the new crossover. With the old crossover removed, the
new can take its place. Remove and use the former crossover
screws for attaching the new crossover, we did use silicone in all
four corners and then screwed the crossover in place.
Press down and pull the wires towards you to make sure the in-
stallation will go smooth when the sticky silicone is later applied.
Then apply the silicone/glue in all four corners and insert the
crossover carefully in place.
Press hard while twisting the screwdriver slowly when placing the
screws.
Important is to install the new crossover quite
far back to not be in the way of the woofer
magnet.
Page 4
Mounted Crossover
The finished mounted crossover looks like this, you can decide
if you want to screw the crossover in place with 4 or 2 screws. If
you use 2 screws we recommend to place them diagonally.
Remember to place the crossover so that the woofer will fit and
mount it a bit further back than the former screw holes.
Page 5
Existing padding
When the new crossover is mounted
it is time to install the former damp-
ening material. Keep in mind that the
wires should stick out of the holes
and it is easier to connect the back
panel before the dampening material
is installed.
How to connect the wires is shown
in the next chapter:
"Connecting The Dots"
Page 6
99.2x Beryllium modification
CONNECTING THE DOTS
When the crossover is in place it is time to connect the crossover
with the speaker drivers and the back panel with jumpers and
speaker terminals. The illustrations below and on next page will
show how the 99.2x and 99.36 speaker models should be con-
nected.
Keep in mind that there are new tweeter +/- dB values as the
crossover has been changed. The new values are stated below.
NEW CROSSOVER PCB
SPEAKER BACK
PLATE
0 dB
+2 dB
+4 dB
NEW TWEETER SETTINGS
5
Page 7
Tweeter +
Tweeter -
Woofer -
Woofer +
99.36 Beryllium modification
NEW CROSSOVER PCB
SPEAKER BACK
PLATE
OLD CROSSOVER PCB
Page 8
The beryllium tweeter has the same faceplate dimensions and
therefore fits perfectly in the old tweeters mounting hole.
There are two different mounting holes for the 99-series.
TWEETER ASSEMBLY
This type of hole will need some carving
in the inner hole to fit the new driver.
However it will not be a visual matter
when you are done. Preferably using a
sharp knife to carve in the MDF.
The speaker with the ability to turn the
tweeter do not need any caving of the
inner hole.
6
Page 9
1 2
3 4
When the old tweeter is removed it is
possible to place the Beryllium tweet-
er, be sure that the holes are in a
straight line horizontally or vertically,
then use a pencil to mark where the
holes should be.
Use an awl or something other sharp
tool to make a guide for the later
drilling, this increases the precision
which is needed due to small mar-
gins.
Use a 2 mm drill, and be sure the
drill is orthogonal to the baffle when
drilling. To make a tight seal around
the new tweeter ensure the old holes
does not have any material poking
out, Use a countersink or larger drill
to remove peaks. As long as the
surface is flat/smooth behind the new
tweeter, the seal is airtight enough.
Now connect the tweeter and screw it
in with your newly created holes.
Congratulations you are done!
When using sharp tools & power tools, take things slow
and be careful.
Page 10
Very last step
Connect the Tweeter and woofer as shown in chapter 5
"connecting the dots" and screw them in place.
CONGRATULATIONS YOU ARE DONE!
Page 11
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